• Title/Summary/Keyword: Releasing

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Economic Effectiveness of the Olive Flounder (Paralichthys olivaceus) Fry Releasing Program in Korea (넙치 종묘방류사업의 경제적 효과분석)

  • Seo, Ju-Nam;Paek, Jin-Yi;Kim, Do-Hoon
    • Ocean and Polar Research
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    • v.32 no.4
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    • pp.483-488
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    • 2010
  • Since 2000 fry releasing programs in Korea have significantly expanded in order to support the commercial fishing industry through recruitment enhancement of targeted species. Here we investigate the economic effectiveness of the Olive flounder (Paralichthys olivaceus) fry releasing program in Korean waters. The market survey method was used in our analyses. Results show that the B/C ratio, as an indicator of economic evaluation, is 2.56 in the East Sea region, 9.45 in the South Sea region, and 1.34 in the West Sea region, which indicates that the fry releasing program is economically feasible but the economic effectiveness varies from region to region.

Two Clinical Cases on Plantar Fasciitis Using Myofacial Releasing Therapy and Acupuncture Therapy (족저근막 이완요법과 침치료를 이용한 족저근막염 치험 2례)

  • Hwang, Hyung-Joo;Lee, Kil-Joon;Park, Young-Hoi;Keum, Dong-Ho
    • Journal of Korean Medicine Rehabilitation
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    • v.18 no.2
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    • pp.111-118
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    • 2008
  • Objectives : Plantar fasciitis is most common cause of heel pain which starts from anterior tubercle of calcaneus. It is chronic inflamation of plantar fascia, reduces collagen and water content of heel pad which incur the degenerative changes with elastic fiber weakness. We have evaluated the effect of myofacial releasing therapy and acupuncture therapy by experimenting two patients suffering from plantar fasciitis. Methods : Two patients were diagnosed as plantar fasciitis through their symptoms. We used myofacial releasing therapy and acupuncture therapy to the patients and measured VAS(Visual analogue scale). Results and Conclusions : After treating myofacial releasing therapy and acupuncture therapy in two cases, We figured out that the patients were on the mend. These results suggest that myofacial releasing therapy and acupuncture therapy were effective to heel pain.

Stability and Environmental Safety of a Nanosized Agroformulation by Using Gamma-irradiation Technique (감마선을 이용하여 제조한 농업용 나노제제의 보존성 및 환경안전성)

  • Park, Hae-Jun;Kim, Hwa-Jung;Choi, Jin-Su
    • Journal of Radiation Industry
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    • v.7 no.2_3
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    • pp.171-176
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    • 2013
  • In previous study, the novel nanosized curdlan-silica complex for a sustain-releasing effect was developed by using gamma-irradiation. It can be applicable to use in various sustainr-eleasing formulation in agriculture industry. This study was conducted to investigate its storage stability and environmental toxicity in an accelerated condition. The complex samples were treated with high temperature condition ($65^{\circ}C$) during 3 weeks, and then sustain-releasing property of complex was verified thereby using Ion Chromatography on a weekly basis. The morphology of the complex was characterized using scanning electron microscopy (SEM). Results of Ion Chromatography analysis showed that sample treated for 3 weeks was similar to sustain-releasing pattern of non-treatment sample. We verify concluded that the complex is able to keep its sustain-releasing property and sustained-releasing in 3 years. Also the formulation has no environmental toxicity.

A matrix-typed, sustained-releasing agent comprising agrochemical and the sustained-releasing product analysis for the preparation (매트릭스형의 서방성(Sustained-Releasing) 수분 인지방출 농약제제 및 그 제조를 위한 서방성 방출분석)

  • Park, Hae-Jun;Kim, Sung Ho;Kim, Hwa Jung
    • Analytical Science and Technology
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    • v.20 no.2
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    • pp.176-182
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    • 2007
  • The present study relates to a matrix-typed, sustained-releasing agent comprising agrochemical effective ingredients being capable of recognizing a content of moisture, and a preparation method thereof. The curdlan solution added to acid was formed matrix which has unique network structure. The matrix treated by heat lost water solubility. The network structure of matrix was opened in the aquatic condition but closed again in dry condition. Therefore, in the sustained-releasing formulation system, an agrochemical effective ingredient was released from the formulation only in the aquatic condition. Use of the composition according to the product can control a manifesting time of effects of agrochemicals and can provide agrochemicals with reduced harmful damages.

Effect of Exogenous Porcine GH Administration on GH Responses to GH-releasing Peptide-2 and GH-releasing Hormone in Swine

  • Nou, V.;Tomoshi, K.;Inoue, H.;Matsunaga, N.;Kuwayama, H.;Hidari, H.
    • Asian-Australasian Journal of Animal Sciences
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    • v.16 no.8
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    • pp.1188-1192
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    • 2003
  • Negative feedback on GH responses to GH-releasing hormone (GHRH) and GH-releasing peptides (GHRPs) has been reported and this action has been suggested to act through an increase in somatostatin. To determine whether the acute administration of porcine GH (pGH) inhibits GH responsiveness to GHRP-2 and GHRH in swine, swine were intravenously administered with pGH (5${\mu}g$/kg BW) or placebo followed 180 min later by a second intravenous administration of saline, GHRP-2 (30 ${\mu}g$/kg BW), GHRH (1${\mu}g$/kg BW) and a combination of GHRP-2 and GHRH. Plasma GH concentration was measured by radioimmunoassay. Administration of pGH caused a significant increase in GH area under curve and GH peak concentrations (p<0.001) over placebo-treated group. Plasma GH concentrations peaked at 15 min and returned to baseline level within 90 min. Pretreatment of pGH abolished (p<0.01) GH response to GHRH and attenuated (p<0.05) GH response to GHRP-2 and GHRH combined, without affecting GH response to GHRP-2. These results demonstrate that negative feedback action on GH releasing effect of GHRH occurs in swine, and that GHRP-2 has ability to interact in this action.

A study on releasing high aspect ratio micro features formed with a UV curable resin (UV경화수지의 고형상비 미세패턴 이형에 관한 연구)

  • Kwon, Ki-Hwan;Yoo, Yeong-Eun;Kim, Chang-Wan;Park, Young-Woo;Je, Tae-Jin;Choi, Doo-Sun
    • Proceedings of the KSME Conference
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    • 2008.11a
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    • pp.1833-1836
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    • 2008
  • Recently as the micro surface features become higher and diverse in their shapes, the releasing of the molded features becomes more crucial for manufacturing of the micro patterned products. The higher aspect ratio of the features or more complex shape of the features results in larger releasing force, elongation or cohesive failure of the features during the releasing. Another issue would be the uniformity of the released surface features after molding, especially for applications with large area surface. The micro patterned optical film, one of typical applications for micro surface features, consists of two layers, the thermoplastic base film and the micro formed UV resin layer. Therefore two interfaces are typically involved during the forming of this micro featured film; one is between the base film and the UV resin and another is between the resin and the pattern master. To improve the releasing of the molded surface features, the adhesive characteristic was investigated at these two interfaces. A PET film was used as a base film and two UV curable resins with different surface energy were prepared for different adhesiveness. Also the two different pattern masters were employed; one is made from brass-copper alloy and fabricated with PMMA. The adhesiveness at each interface was measured for some combinations of these base film, UV resins and the masters and the effect of this adhesiveness on the releasing was investigated.

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Investigation of Fastening Performance of Subminiature Serrated Bolt (초소형 쎄레이션 볼트의 체결성능 분석)

  • Jang, Myung Guen;Jeong, Jin Hwan;Jang, Yeon Hui;Kim, Hee Cheol;Kim, Jong-Bong
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.41 no.4
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    • pp.257-262
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    • 2017
  • As the size of electric products such as mobile phones and smart watches decrease, the bolts used to assemble these products should also be miniaturized. A miniature-sized bolt has to provide sufficient joining torque and anti-releasing torque to keep the components together. We studied a serrated bolt as a candidate for a miniature-sized fastener to increase the anti-releasing torque. In a serrated bolt, a serrated shape is formed on the bottom surface of the bolt head to create an obstacle to releasing. In this study, finite element analyses for the joining and releasing of bolts were carried out, and the anti-releasing performance was predicted. Based on the results of analyses using various numbers of serrations and fastening depths, the effects of the number of serrations and fastening depth on the anti-releasing performance were investigated.

Synthesis and Drug-Releasing Behavior of Various Polymeric Prodrugs of PGE1 with PEG and Its Derivative as Polymer Carriers

  • Lee, Chan-Woo
    • Journal of Biomedical Engineering Research
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    • v.28 no.4
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    • pp.484-493
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    • 2007
  • Two polymeric prodrugs of PGE1 (prodrugs IVg and PNg) were newly synthesized. The drug conjugation proceeded in quantitative yield without decomposition of PGE1 to PGA1. With two types conjugates, PEG-PGE1 and PN-PGE1 with different spacer groups, we first discovered a possibility of slow release of PGE1 in blood circulatory system. PGE1 is conjugated with PEG and PN through the long alkylene spacers, and their availability as polymeric prodrugs is evaluated. Their drug-releasing behavior was examined both in phosphate buffer (pH=7.4) and rat plasma. Each prodrug was known to be highly stabile in the buffer solution. The drug-releasing rate became much faster in rat plasma than in the buffer solution due to the acceleration by the plasma enzymes. The drug-release was found to reach a plateau in rat plasma because the released PGE1 or its derivatives may be captured or decomposed by the plasma proteins. The slower drug-releasing rate of pro drug PNg in rat plasma is reasonably attributed to the molecular aggregation due to the hydrophobic bonding between the PGE1 moieties and spacers.

Thread Shape Design Using Joining and Release Analysis of Bolts (조임 및 풀림 해석을 이용한 나사산 형상 설계)

  • Jeong, Jin Hwan;Lee, Hyun-Kyu;Kim, Jong-Bong;Park, Keun
    • Journal of the Korean Society for Precision Engineering
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    • v.32 no.6
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    • pp.523-528
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    • 2015
  • As the sizes of mobile phones and watch phones decrease, the joining bolt for the products should also be decreased to a miniature size. However, the miniature-sized bolt has to support sufficient joining and anti-releasing torque to keep the product fastened. In this study, the thread shapes are designed to improve anti-releasing performance of bolts. Especially, when bolt materials is stronger than nut materials, the design of thread shapes is needed, like bolt for wood, to improve the fastening capability. Through the joining and releasing analyses of bolts, the thread shapes for SUS302 bolt and Mg alloy nut are newly designed. It was shown that the newly designed bolt has 20 % higher anti-releasing torque and 35% lower torque loosening slope compared to the standard bolt.

A Scoping Review of Musculotendinous Releasing Manual Therapy and Suggestions for Clinical Application (근건이완수기요법에 대한 Scoping Review 및 임상활용 방향 제언)

  • Jung-Sik Park;Yun-Kyung Song
    • Journal of Korean Medicine for Obesity Research
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    • v.23 no.1
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    • pp.18-27
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    • 2023
  • Objectives: The purpose of this study was to review the studies of musculotendinous releasing manual therapy and suggestions for clinical application. Methods: Derive research questions using the scoping review methodology. Searching for related studies, the studies were selected, and the data were analyzed and reported. We searched domestic database for studies on musculotendinous releasing manual therapy reported till April 2023. We reviewed 82 studies excluding duplicate studies and 13 studies were selected. Results: Five studies were literature studies and eight studies were clinical studies. Among the five literature studies, two studies investigating and analyzing general manual therapy, one study investigating manual therapy applied to frozen shoulders, and one systematic literature review to investigate the economic effects of manual therapy, one study using tools. There was one study examining research trends in manual therapy. Eight clinical studies were conducted on patients with Achilles tendinitis, tennis elbow, meralgia paresthetica and obesity. Conclusions: Musculotendinous releasing manual therapy is thought to be applicable not only to musculoskeletal disease but also to changes in body shape due to connective tissue.